# US 11,078,045 B2 · Electronic safety actuator for lifting a safety wedge of an elevator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,045 B2 - Document ID: US11078045B2 - Status: Granted - Kind: B2 - Application number: 15/980,418 - Filed: 2018-05-15 - Published: 2019-11-21 - Granted: 2021-08-03 - Earliest claimed: 2018-05-15 - Assignees: Otis Elevator Company - Applicants: Otis Elevator Company - Inventors: Justin Billard; Daryl J. Marvin; Erik Khzouz; Marcin Wroblewski - Web page: https://patentgrep.com/patent/US11078045B2 ## CPC - B66B 5/18: and applying frictional retarding forces - B66B 5/22: by means of linearly-movable wedges (B66B5/24 takes precedence) - B66B 5/044: {Mechanical overspeed governors} - B66B: ELEVATORS; ESCALATORS OR MOVING WALKWAYS ({apparatus for raising or lowering persons on theatrical stages or the like A63J5/12} ; funicular railbound systems with rigid ground-supported tracks and cable traction, e.g. cliff railways, B61B9/00; arrangements of ammunition handlers in vessels B63G3/00; hoists, lifts, or conveyors for loading or unloading in general B65G; braking or detent devices controlling normal movements of winding drums or barrels B66D; ship-lifting devices E02C; garages for many vehicles with mechanical means for lifting vehicles E04H6/12; hoists for feeding ammunition or projectiles to launching apparatus or to loading mechanisms F41A9/00) ## Abstract An electronic safety actuation device for braking an elevator car includes a safety brake movable between a non-braking position and a braking position, a first electronic safety actuator operably coupled to the safety brake via a first link member, and a second electronic safety actuator operably coupled to the safety brake via a second link member. Operation of the first electronic safety actuator applies a force to the first link member to move the safety brake from the non-braking position to the braking position. Operation of the second electronic safety actuator applies a force to the second link member to move the safety brake from the non-braking position to the braking position. ## Claims ### Claim 1 An electronic safety actuation device for braking an elevator car comprising: a safety brake having a movable member movable between a non-braking position and a braking position; a first electronic safety actuator operably coupled to the movable member of the safety brake via a first link member; a second electronic safety actuator operably coupled to the movable member of the safety brake via a second link member; wherein operation of the first electronic safety actuator applies a force to the first link member to move the movable member from the non-braking position to the braking position and operation of the second electronic safety actuator applies a force to the second link member to move the movable member from the non-braking position to the braking position. ### Claim 2 (depends on 1) The electronic safety actuation device of claim 1, wherein the second link member is coupled to the safety brake via the first link member. ### Claim 3 (depends on 2) The electronic safety actuation device of claim 2, wherein the first link member and the second link member are connected via a pin and slot engagement. ### Claim 4 (depends on 2) The electronic safety actuation device of claim 2, wherein the first link member is movable relative to the second link member to move the safety brake from the non-braking position to the braking position. ### Claim 5 (depends on 2) The electronic safety actuation device of claim 2, wherein the second link member is configured to move in conjunction with the first link member to move the safety brake from the non-braking position to the braking position. ### Claim 6 (depends on 1) The electronic safety actuation device of claim 1, wherein the first electronic safety actuator and the second electronic safety actuator are integrally formed as a single unit. ### Claim 7 (depends on 1) The electronic safety actuation device of claim 1, wherein the first electronic safety actuator includes a first housing and the second electronic safety actuator includes a second housing, separate from the first housing. ### Claim 8 (depends on 1) The electronic safety actuation device of claim 1, wherein the first electronic safety actuator further comprises: a magnetic brake operably coupled to the first link member, the magnetic brake being movable between a first position and a second position; and an electromagnetic component configured to hold the magnetic brake in one of the first position and the second position. ### Claim 9 (depends on 1) The electronic safety actuation device of claim 1, wherein the safety brake includes a wedge having a contact surface, the wedge being movable between the non-braking position and the braking position. ### Claim 10 An electronic safety actuation device for braking an elevator car comprising: a safety brake movable between a non-braking position and a braking position; a first electronic safety actuator operably coupled to the safety brake via a first link member; a second electronic safety actuator including a second link member, the second link member being operably coupled to the safety brake via the first link member; wherein operation of the first electronic safety actuator applies a force to the first link member to move the safety brake from the non-braking position to the braking position and operation of the second electronic safety actuator applies a force to the second link member to move the safety brake from the non-braking position to the braking position.